Katagai Surf Forecast

/ Chiba (19 surf breaks) /

Japan (129 surf breaks) / Lat Long: (35.53° N 140.46° E)

Surf Forecasts:

Katagai surfForecast / Chiba / Japan

48hr Weather and Surf, issued 8 am Monday 25 Aug 2025 JST

Forecast update in hr min s Forecast update imminent

Katagai surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Katagai sea temperature is 27.2° C
(Which is slightly warmer than usual)

How big are the waves at Katagai today?

The current surf forecast for Katagai at 3PM is: 0.4m 8s primary swell from a East-southeast direction and 0.2m 2s secondary swell from a East-northeast direction (forecast issued at 08:00am August 25). The wind direction is predicted to be cross-onshore.

Time (JST) & Date	Wave Height	Wave Period
Morning (25 Aug)	1.5ft (0.4m)	8s
Afternoon (25 Aug)	1.5ft (0.4m)	8s
Evening (25 Aug)	1.5ft (0.4m)	8s

Table - waves today at Katagai. (Swell directed towards the surf break)

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Monday 25						Tuesday 26								Wednesday 27								Thu 28
	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	0 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	0 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	0 AM	3 AM
Rating (10 max)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1
Swell Height Map See all maps
Wave Height (m) & direction (?)	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	SE	SE	SE	SE	ESE	ESE	ESE	ESE	ESE	S	SSW	SSW	ESE	SSW
Period(s) (?)	8	8	8	8	8	8	8	8	8	8	10	10	10	10	10	10	9	9	9	5	5	5	9	6
Wave Graph (?)
Energy (?)	25	25	24	30	30	29	28	34	32	24	36	46	49	45	56	58	62	61	60	83	86	79	68	126
Wind (km/h)	NNE	ENE	E	E	E	SE	SSW	SW	SSW	S	S	S	SSW	SSW	SSW	SW	SW	SW	SSW	SSW	SSW	SSW	SW	S
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- off	cross	cross- on	cross- on	cross- on	on	glass	cross	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross	cross	cross	cross	cross	cross- on	cross- on	cross	cross	glass
High Tide / height (m)	4:42AM 1.43				5:36PM 1.34				5:22AM 1.39				5:52PM 1.36					6:01AM 1.32				6:09PM 1.37
Low Tide / height (m)			11:16AM 0.28				11:26PM 0.54				11:41AM 0.39				11:59PM 0.47					12:03PM 0.51				12:33AM 0.43

	Monday 25						Tuesday 26								Wednesday 27								Thu 28
Sunrise	5:03	-	-	-	-	-	-	-	5:03	-	-	-	-	-	-	-	5:05	-	-	-	-	-	-	-
Sunset	-	-	-	-	6:15	-	-	-	-	-	-	-	6:14	-	-	-	-	-	-	-	6:13	-	-	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp. °C	26	28	28	28	28	27	27	27	26	29	30	30	28	27	27	27	26	30	32	31	28	27	27	26
Feels °C (?)	30	31	30	31	32	31	32	32	30	31	30	29	29	29	28	28	27	30	31	30	28	29	30	31

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Recent Eyeball Surf Reports for Chiba

Wind Update Offshore wind reported 22 km from Tsurigasaki Surfing Beach (Tokyo 2020) (light winds from the SSW at Katsuura 22 km from Tsurigasaki Surfing Beach (Tokyo 2020)). 0.4m 8s swell from the ESE with a 0.2m 2s local chop from the NE and a 0.1m 9s swell from the ENE. 3 swells combining to make bigger set waves.
1 hour 3 minutes ago Tsurigasaki Surfing Beach (Tokyo 2020)

Expand

View all

27 km away, 1 h 33 min ago

15 km/h

NNE

0.0

27.2

Air / Water (°C)

Please reload the page to see if there are any updates.

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Katagai surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.